HYBRID DRIVE SYSTEM

A hybrid-driven device is provided capable of effecting improved efficiency of assembling work and maintainability of modules of a motor, a fuel cell and a battery, as well as reliable control. A hybrid-driven device having a battery and a fuel cell as power sources for a motor for driving a vehicle, a main switch for switching on the power sources, and a device controller 5 for controlling the vehicle, wherein said motor 31, battery 60 and fuel cell 70 are arranged as module units 3, 6, 7, respectively, each module unit is provided with a module controller 30, 61 or 71 and detection means for detecting the state of the module, and said module controller has storage means for storing detected state data.